Amazon has the Orbi RBK33 system[amazon.com] on a Lightning Deal for $200 with $40 extra savings coupon (total $160).
This is very similar to the system Best Buy has been running recently (search the threads for recent conversations regarding that model) in that it uses plug-in satellites. This one, however, uses a slightly different router (the RBK33 kit contains an RBR40 router and the RBK23W kit BestBuy sells contains an RBR20 router; I don't know how much real-world difference that makes [EDIT: Update, it looks like the RBR40 router has 3 LAN ports, while the RBR20 only has 1]). It is not the desktop model (which has Ethernet ports on the satellites; this model has no ports on the satellites).